Angle adjustment device for inner welding seam welding gun

Abstract

The invention provides an internal welding seam welding gun angle adjustment device, comprising a driving part, which drives a worm and a turbine body through a longitudinally extended extension rod, the screw rod is fixed at the center of the turbine body, the nut thereon is fixed on a lifting seat, the front ends of the lifting seat slide laterally in cooperation with guide pillars 2 through guide grooves, and the guide pillars 2 are connected to a swing rod; a linear slide rail is laterally arranged at the front end of a base, two groups of sliding seats are slidably connected thereon, a guide pillar 1 is guided through between the sliding seats, a compression spring is arranged on the outer sleeve of the guide pillar 1, the top end of the sliding seat is hinged to the swing rod through a fixed shaft, and a welding gun seat is arranged on the front side of the other end of the swing rod, two groups of side tracking pressure wheels are correspondingly rotatably connected to the two groups of sliding seats, and are used to clamp the inner two sides of a workpiece; one end of the welding gun swing seat is connected to the welding gun seat, and the other end is provided with a gun clamp. The invention has low cost, is easy to produce and maintain, and can be applied to the welding of smaller U-rib inner welds and the inner seam welding operation of workpieces with narrow opening spaces.

Description

Technical Field

[0001] The invention relates to an adjusting device, in particular to an inner welding seam welding gun angle adjusting device. Background Art

[0002] At present, prefabricated structural parts need to be manufactured during the construction of bridges, among which U-rib plate welding is a very important part. The original welding process adopts the process of outer single-sided welding. The weld penetration and weld strength cannot meet the needs during use. Therefore, it is urgent to develop a new welding machine that can adapt to inner seam welding. However, the existing inner seam welding machines are generally difficult to complete the inner seam welding of workpieces with smaller openings. That is, after the equipment itself uses the monitoring system, the automatic angle adjustment equipment is generally large in size, so it is difficult to reach into the workpiece with smaller opening to adjust the welding gun in real time for inner seam welding operation, especially when the weld length is large, manual welding is also difficult to perform.

[0003] A welding gun posture adjustment device for a U-rib internal upward welding system (publication number CN110524093A) is used to adjust the position of a welding gun for repairing the weld between the U-rib and the panel from the inside of the U-rib. The welding gun posture adjustment device is arranged on a walking mechanism that moves along the length direction of the U-rib and includes a welding gun pitch angle adjustment mechanism, a welding gun height adjustment mechanism and a welding gun lateral movement adjustment mechanism. The welding gun is installed on the welding gun pitch angle adjustment mechanism, the welding gun pitch angle adjustment mechanism is fixed on the welding gun height adjustment mechanism, and the welding gun height adjustment mechanism is fixed on the welding gun lateral movement adjustment mechanism. The welding gun posture adjustment device of the U-rib internal upward welding system of this invention adopts an independent drive to achieve the adjustment of the welding gun angle, height and lateral movement, and can be installed at the end of various automatic welding devices. Although it can achieve multi-dimensional precise adjustment of the welding gun, the welding gun posture adjustment device for achieving angle adjustment (including welding gun pitch angle adjustment mechanism, welding gun height adjustment mechanism, welding gun lateral movement adjustment mechanism, support mechanism; U-shaped groove, angle adjustment drive mechanism; welding gun seat, screw rod, screw rod seat; gear, rack) only needs to enter the internal welding space together with the welding gun. Even if a smaller welding gun pitch angle adjustment mechanism, welding gun height adjustment mechanism, welding gun lateral movement adjustment mechanism, and angle adjustment drive mechanism are used, it is impossible to achieve welding in the smallest possible space, and the cost of the above-mentioned small-volume equipment is also high, so it is not suitable for on-site processing and production and equipment replacement at any time. Summary of the invention

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide an internal welding seam welding gun angle adjustment device, which has low equipment cost, is convenient for production and subsequent maintenance, and can be used for welding of smaller U-rib internal welds and internal seam welding operations of workpieces with narrow opening spaces.

[0005] The present invention provides the following technical solutions:

[0006] An internal welding seam welding gun angle adjustment device comprises a base, a driving part, a worm, a lead screw, a lifting seat, a linear slide rail, a side tracking pressure wheel, and a welding gun swing seat; the driving part is arranged at the tail end of the base, and drives the worm to rotate through a longitudinally extending extension rod, one side of the worm is connected with a turbine body in a matching transmission, and the turbine body is installed on the base through a turbine fixing seat; the lead screw is fixed at the center of the turbine, and the nut threadedly connected thereto is fixed on the lifting seat to drive the lifting seat to rise and fall, and the front end of the lifting seat extends to both sides with lateral extension sections; the linear slide rail is transversely arranged at the front end of the base, and two sets of sliding seats are slidably connected thereto, and the guide rails between the sliding seats are provided. A guide column 1 is provided in the longitudinal direction, and a compression spring is provided on the outer sleeve of the guide column 1 and abuts between the two groups of sliding seats. A column bracket is provided on the sliding seat, and the top of the column bracket is hinged to one end of the swing arm through a fixed shaft, a welding gun seat is provided on the front side of the other end of the swing arm, and a guide column 2 is provided on the rear side thereof, and a guide groove for cooperating with the lateral sliding of the guide column 2 is provided in the lateral extension section; two groups of side tracking pressure wheels are provided, and correspondingly connected to the opposite ends of the two groups of sliding seats for pressing the two sides of the workpiece under the pressure of the compression spring; one end of the welding gun swing seat is connected to the welding gun seat and is locked and fixed by a locking handwheel, and the other end thereof is provided with a gun clamp for clamping the gas shielded welding gun.

[0007] Preferably, the driving part includes a sector gear pair arranged at the tail end of the extension rod, the other end of the sector gear pair is connected to the handwheel shaft, and the end of the handwheel shaft passing through the side frame is connected to the driving handwheel.

[0008] Preferably, the base includes a front section and a rear section of the base body, the tail end of the front section of the base body is fixedly connected with at least two groups of connecting rods, the rear section of the base body is provided with a through hole for the connecting rod to pass through, and the tail end of the rear section of the base body is abutted against a locking nut for positioning the rear section of the base body; the extension rod includes an extended front section, an extended section and an extended rear section which are plugged in and matched in sequence, the extended section is provided with at least one group, and a positioning plug-in 1 is provided at one end thereof, and a positioning slot 1 which matches with the positioning plug-in 1 is provided at the other end thereof, the tail end of the extended front section is provided with a positioning slot 2 which corresponds to the positioning plug-in 1 and is plugged in and matched with the positioning slot 1, and the front end of the extended rear section is provided with a positioning plug-in 2 which corresponds to the positioning slot 1.

[0009] Preferably, the connecting rod is connected to the rear end of the front section of the seat body via threads.

[0010] Preferably, both the positioning plug-in 1 and the positioning plug-in 2 are cross-shaped plug-ins.

[0011] Preferably, the bottom of the base is provided with running wheels.

[0012] Preferably, a connecting sleeve is provided between the extension rod and the worm, and the connecting sleeve is connected to the extension rod and the worm for transmission via a connecting flat key.

[0013] Preferably, the base is also provided with a guide rod for cooperating with the lifting seat for lifting and lowering guidance.

[0014] Preferably, both ends of the extension rod and the worm are mounted on the base via bearings and bearing seats, and a pressure cover is also provided on one side of the bearing seat for covering the end of the extension rod to prevent dust from entering.

[0015] The beneficial effect of the present invention is that when welding operation is required, the angle adjustment device can be pushed into the workpiece, the compression spring is compressed, and the side tracking pressure wheel presses the workpiece to track the side wall of the workpiece. After the gun clamp is adjusted to a suitable position, it can work normally. When the angle of the gun clamp needs to be adjusted to adapt to the inner weld position, that is, when it is found from the outside that the welding gun angle needs to be adjusted during the welding process, it is only necessary to rotate the hand wheel externally, and the lifting seat is driven to rise and fall through the transmission of the sector gear pair, the worm gear, and the turbine body, and then the lateral extension sections on both sides thereof drive the welding gun seat to move through the guide column 2. Since the welding gun seat is limited by the rocker arm, the fixed shaft and the sliding seat, the welding gun seat can be adjusted in the lateral position along the guide groove while being lifted and lowered, thereby completing the adjustment of the welding gun angle. During the adjustment process, due to the arrangement of an extension rod connecting the driving part, the volume of the parts extending into the inner part of the workpiece is reduced, and the cooperation of the worm, lead screw, lifting seat, linear slide rail, side tracking pressure wheel, and welding gun swing seat structural parts arranged at the front end of the base can further reduce the volume of parts used to achieve the angle adjustment of the gas shielded welding gun, thereby achieving not only the purpose of reducing equipment costs and facilitating production and later maintenance, but also better adaptability in the welding of smaller U-rib inner welds and inner seam welding operations of workpieces with narrow opening spaces. At the same time, due to the use of a worm gear structure, it has a certain self-locking property, and the gas shielded welding gun will not loosen due to shaking during walking. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a front view of the structure of the present invention in Example 1;

[0018] Figure 2 is a top view of the structure of the present invention in Example 1;

[0019] Figure 3 It is a right side view of the structure of the present invention in Example 1;

[0020] Figure 4 It is a front view of the structure of the present invention in Example 2;

[0021] Figure 5 is a top view of the structure of the present invention in Example 2;

[0022] Figure 6 It is a right side view of the structure of the present invention in Example 2;

[0023] Figure 7 It is a structural schematic diagram of the extended section;

[0024] Figure 8 It is a side view of the extended section;

[0025] Fig. 9 It is a partial schematic diagram of the tail structure of the base;

[0026] Fig.10 yes Fig. 9 A top view of

[0027] Fig.11 It is a schematic diagram of the structure of the driving unit;

[0028] Markings in the figure: 1. Base, 11. Travel wheel, 2. Extension rod, 21. Sector gear pair, 22. Bearing seat, 23. Rolling bearing, 24. Pressure cover, 25. Handwheel shaft, 26. Handwheel, 27. Connecting sleeve, 28. Connecting flat key, 3. Worm, 31. Turbine body, 311. Screw, 32. Turbine fixed seat, 33. Lifting seat, 34. Guide rod, 35. Nut, 4. Sliding seat, 41. Linear slide, 42. Guide column 1, 43. Pressure Compression spring, 44. rocker arm, 441. welding gun seat, 442. guide column 2, 45. welding gun swing seat, 451. locking hand wheel, 452. gun clamp, 453. gas shielded welding gun, 46. fixed shaft, 47. side tracking pressure wheel, 201. extended front section, 202. extended section, 203. extended rear section, 204. positioning plug-in 1, 205. positioning slot 1, 206. front section of the seat body, 207. rear section of the seat body, 208. connecting rod, 209. locking nut. DETAILED DESCRIPTION

[0029] Example 1

[0030] Combination Figure 1-39-11, in this embodiment, comprises a base 1, a driving part, a worm 3, a screw 311, a lifting seat 33, a linear slide 41, a side tracking pressure wheel 47, and a welding gun swing seat 45; the driving part is arranged at the tail end of the base 1, and drives the worm 3 to rotate through the longitudinally extending extension rod 2, and one side of the worm 3 is connected with a turbine body 31 through a turbine fixing seat 32; the screw 311 is fixed at the center of the turbine body, and the nut 35 threadedly connected thereto is fixed on the lifting seat 33 for driving the lifting seat 33 to rise and fall, and the front end of the lifting seat 33 extends a lateral extension section toward both sides; the linear slide 41 is transversely arranged at the front end of the base 1, and two sets of sliding seats 4 are slidably connected thereto A guide column 42 is provided between the sliding seats 4, and a compression spring 43 is provided on the outer sleeve of the guide column 42 to abut between the two groups of sliding seats 4. A column bracket is provided on the sliding seat 4, and the top of the column bracket is hinged to one end of a swing rod 44 through a fixed shaft 46. A welding gun seat 441 is provided on the front side of the other end of the swing rod 44, and a guide column 2 442 is provided on the rear side thereof, and a guide groove for cooperating with the guide column 2 442 for lateral sliding is provided in the lateral extension section; two groups of side tracking pressure wheels 47 are provided, and are correspondingly connected to the opposite ends of the two groups of sliding seats 4 for pressing the two sides of the workpiece under the pressure of the compression spring 43; one end of the welding gun swing seat 45 is connected to the welding gun seat 441 and is locked and fixed by a locking hand wheel 451, and the other end thereof is provided with a gun clamp 452 for clamping a gas shielded welding gun 453.

[0031] The driving part includes a sector gear pair 21 arranged at the tail end of the extension rod 2, the other end of the sector gear pair 21 is connected to a handwheel shaft 25, and the end of the handwheel shaft 25 passing through the side frame is connected to a driving handwheel 26.

[0032] The bottom of the base 1 is provided with running wheels 11 .

[0033] A connecting sleeve 27 is provided between the extension rod 2 and the worm 3 , and the connecting sleeve 27 , the extension rod 2 and the worm 3 are connected for transmission via a connecting flat key 28 .

[0034] The base 1 is also provided with a guide rod 34 for cooperating with the lifting seat 33 for lifting and lowering guidance.

[0035] Both ends of the extension rod 2 and the worm 3 are mounted on the base 1 through rolling bearings 23 and a bearing seat 22, and a pressure cover 24 is also provided on one side of the bearing seat 22 for covering the end of the extension rod 2 to prevent dust from entering.

[0036] Example 2

[0037] Combination Figure 4-11The illustrated embodiment is an internal welding seam welding gun angle adjustment device. In this embodiment, the difference from Embodiment 1 is that the base 1 includes a front section 206 of the base body and a rear section 207 of the base body. The tail end of the front section 206 of the base body is fixedly connected with at least two groups of connecting rods 208. The rear section 207 of the base body is provided with a through hole for the connecting rods 208 to pass through, and the tail end of the rear section 207 of the base body is against a locking nut for positioning the rear section 207 of the base body; the extension rod 2 includes an extension front section 201, an extension section 202 and an extension rear section 203 which are plugged in and matched in sequence. The extension section 202 is provided with at least one group, and one end of the extension section 202 is provided with a positioning plug-in 204, and the other end of the extension section 202 is provided with a positioning slot 205 which matches with the positioning plug-in 204. The tail end of the extension front section 201 is provided with a positioning slot 2 which is plugged in and matched with the positioning plug-in 204, and the front end of the extension rear section 203 is provided with a positioning plug-in 2 which matches with the positioning slot 205. The connecting rod 208 is connected to the tail end of the seat front section 206 by threads, and the positioning plug-in 1 204 and the positioning plug-in 2 are both cross-shaped plug-ins. Therefore, the purpose of adjusting the driving length can be achieved by increasing the number of the extension sections 202 and correspondingly replacing the connecting rod 208 or screwing the position of the locking nut, so as to adapt to the inner seam welding operation of the narrow opening space workpiece with different lengths, and the adaptability is better.

[0038] The working principle of the present invention is: when welding operation is required, the angle adjustment device can be pushed into the workpiece, the compression spring 43 is compressed, and the side tracking pressure wheel 47 presses the workpiece to track the side wall of the workpiece. After adjusting the gun clamp 452 to a suitable position, it can work normally. When it is necessary to adjust the angle of the gun clamp 452 to adapt to the inner weld position, that is, when it is found from the outside that the welding gun angle needs to be adjusted during the welding process, it is only necessary to rotate the hand wheel 26 externally, and the lifting seat 33 is driven to rise and fall through the transmission of the sector gear pair 21, the worm 3, and the turbine body 31, and then the lateral extension sections on both sides thereof drive the welding gun seat 441 to move through the guide column 442. Since the welding gun seat 441 is limited by the fixed shaft 46 and the sliding seat 4, the welding gun seat 441 can be adjusted in the lateral position along the guide groove while being lifted and lowered, thereby completing the adjustment of the welding gun angle. During the adjustment process, since an extension rod 2 is provided to connect the driving part, the volume of the parts extending into the inner part of the workpiece is reduced, and the worm 3, screw 311, lifting seat 33, linear slide rail 41, side tracking pressure wheel 47, and welding gun swing seat 45 structural parts arranged at the front end of the base 1 can be coordinated, so that the volume of parts used to achieve angle adjustment of the gas shielded welding gun 453 can be further reduced, thereby achieving not only the purpose of reducing equipment costs and facilitating production and later maintenance, but also better adaptability in the welding of smaller U-rib inner welds and inner seam welding operations of workpieces with narrow opening spaces. At the same time, due to the use of the worm gear 3 structure, it has a certain self-locking property, and the gas shielded welding gun 453 will not loosen due to shaking during walking.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An internal welding seam welding gun angle adjustment device, characterized in that: It includes a base, a driving part, a worm, a lead screw, a lifting seat, a linear slide rail, a side tracking pressure wheel, and a welding gun swing seat; The driving part is arranged at the tail end of the base, and drives the worm to rotate through a longitudinally extending extension rod. One side of the worm is connected to a turbine body in a matching transmission manner, and the turbine body is mounted on the base through a turbine fixing seat. The screw rod is fixed at the center of the turbine body, and the screw nut threadedly connected thereto is fixed on the lifting seat to drive the lifting seat to move up and down, and the front end of the lifting seat extends to both sides with lateral extension sections; The linear slide rail is transversely arranged at the front end of the base, and two groups of sliding seats are slidably connected thereon, a guide column 1 is provided between the sliding seats for guiding, and a compression spring is provided on the outer sleeve of the guide column 1 to abut between the two groups of sliding seats, a column bracket is provided on the sliding seat, and the top end of the column bracket is hinged to one end of the swing rod through a fixed shaft, a welding gun seat is provided on the front side of the other end of the swing rod, and a guide column 2 is provided on the rear side, and a guide groove is provided on the transverse extension section to cooperate with the transverse sliding of the guide column 2; The side tracking pressing wheels are provided in two groups and are correspondingly rotatably connected to the opposite ends of the two groups of sliding seats, and are used to press the two sides of the workpiece under the pressure of the compression spring; One end of the welding gun swing seat is connected to the welding gun seat and is locked and fixed by a locking hand wheel, and the other end thereof is provided with a gun clamp for clamping the gas shielded welding gun; The driving part comprises a sector gear pair arranged at the tail end of the extension rod, the other end of the sector gear pair is connected to the hand wheel shaft, and the end of the hand wheel shaft passing through the side frame is connected to the driving hand wheel; The base comprises a front section and a rear section, the rear end of the front section is fixedly connected with at least two groups of connecting rods, the rear section is provided with a through hole for the connecting rods to pass through, and the rear end of the rear section is abutted against a locking nut for positioning the rear section; The extension rod comprises an extension front section, an extension section and an extension rear section which are plugged in and matched in sequence, the extension section is provided with at least one group, and one end of the extension section is provided with a positioning plug-in 1, and the other end of the extension section is provided with a positioning slot 1 which matches with the positioning plug-in 1, the tail end of the extension front section is provided with a positioning slot 2 which is plugged in and matched with the positioning plug-in 1, and the front end of the extension rear section is provided with a positioning plug-in 2 which matches with the positioning slot 1; A connecting sleeve is provided between the extension rod and the worm, and the connecting sleeve is connected to the extension rod and the worm for transmission via a connecting flat key.

2. The inner welding seam welding gun angle adjustment device according to claim 1, characterized in that: The connecting rod is connected to the rear end of the front section of the seat body through threads.

3. The inner welding seam welding gun angle adjustment device according to claim 1, characterized in that: The first positioning plug-in and the second positioning plug-in are both cross-shaped plug-ins.

4. The inner welding seam welding gun angle adjustment device according to claim 1, characterized in that: The bottom of the base is provided with walking wheels.

5. The inner welding seam welding gun angle adjustment device according to claim 1, characterized in that: The base is also provided with a guide rod for cooperating with the lifting seat for lifting and lowering guidance.

6. The internal welding seam welding gun angle adjustment device according to claim 1, characterized in that: The two ends of the extension rod and the worm are mounted on the base through bearings and bearing seats, and a pressure cover for covering the end of the extension rod to prevent dust from entering is also provided on one side of the bearing seat.

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